Engine-cooling system



March 31, 1931. w. s. FISHER 1,799,095

ENGINE COOLI NG SYSTEM Filed Sept. 7, 1927 INVEN TOR. Mn 7'? 6. 77.5mm

BY mAwm/zm A TTORN'L' Y1 Patented Mar. 31, 1931 U rsn- STATES PATENTFries WALTER s. rismm, or 1 mm, 01am, ASSIGNOR TO THEWILLYS-OVERLANDVQCOM- PARTY; OF TGLEDG, OHIO,

A CORPORATION 9F QHIO ENGINE-COOLING srsrrEr/r Application filedSeptember My invention relates to the water circulatory system ofinternal combustion engines, especially to engines of the so-calledKnight class, and it has particular relationto means 5 for improving thecirculation of water through the head of the engine.

One object of the invention is to provide means for modifying the normalpath of the water entering the head of a Knight engine 5 whereby bettercooling of the portion of the head penetratingthe combustion chamber isrealized.

Another object of the invention is to provide a water circulatory systemfor the head '15 of Knight engines which is capable of performing itsfunction to the fullest e'xtent and at the same time permitting agreater variation in the dimensions of the engine castings, j

It is an additional object of thepresent inventioni to provide a simpleeasily-installed water battle for Knight engines which may be employedwithout modifying the design of the head now employed.

It has been suggested. to deflect the, flow of: water intothe wellportion of the head by providingthe well of each. head with longitudinalbaflies having openings adjacent the bottomof the Well and to providethecylinder so cover witha corresponding longitudinalbaffie which in theassembled position, is contiguous with the head:v bafiies. This, methodof cooling the heads is comparatively satisfactory, but requires asomewhat intricatev cover casting and the variations in manufacture donot always secure thedesired'relation between cooperative members.

According to the present invention, there is provided aseparatedetachable baiiie for each cylinder that formswiththehead aclosed conduitbetween the cylinder jacket and one-half of the head well.The baffle is preferably formed of sheet metal and is provid-ed withears having openings that permit it to be secured to the engine by theusual head bolts. The head construction is practically identical withthat used with the cylinder cover having a longitudinal battle, that is,battles are provided in the well that divide it, into two lateralcompartments that 7, 1927. Serial No. 218,019.

communicate with each other through openings near the lower part'of thewell.

One of the embodiments of the invention which may be preferred, 'isillustrated in the accompanying drawings, in which Figure I is aplanview of a portionof an engine block with the cylinder cover removedand illustratesthe assembled relation of the water baffles formed as aunitary element. 7 r r Fig. II is a sectional view taken along the lineIIII of Fig. 1, and

Fig. III is a perspective view of the under side of a baflie element.

The essentialelements of a conventional Knight engine include a cylindercasting; 10 having a water jacket 11, a pair of concentric sleeves 12and 13 within the cylinden'and a depending head 14 within thesleeveswhich is secured to the cylinder by means of bolts 15. The cylinder headis-formed with-I a recess or well 16 at the top thus forming a cylinderhead cooling jacket that, permits water to enter and cool the portion.ofthe-head that isin contact with the heated gases. The well is annularin-shape because of the upstanding barrel portion 24' that is used forpremitting a spark plug 17 to be inserted in the threaded opening in thehead. A watertight cover 18 having the usual gasket 26 for sealing theopening between thecover 18 and the barrel 24: is placed over theentireengine and servestoconnect the cylinder waterjacket 11 with thewell portion of the head 16 and provides a cooling system; for theengine in which the water may be circulated to and.

from the radiator in the usual manner, In order to direct the flowofwater from the cylinder jacket through one-side of the head and outthe othersid'e in a manner to cause the water to impinge against themetal at the bottom of the well, I have provided each headwith baiiies19"thatdivide the annular well into two lateral compartments. Openingsare provided in the baflienearthe bottom of the well for permitting freecirculation 1 between. the compartments. A pressed steel or brass baffle.21 of somewhat cup-shape design is placed over the top of the cylinderhead and secured thereto by the bolts 15 in amanner to direct all thewater passing through the cylinder jacket opening 21a into one of thelateral compartments of the cylinder head well. The water so directed inorder to reach the other side of the engine, must necessarily passdownwardly toward the bottom of the well and through the openings in thehead battle as is indicated by the arrows in Fig. II. The deflection ofthe water toward the lower portion of the well is very desirable in thatthe heated portion of the head in contact with the exploded gases is inthe direct path of the water and is much better cooled than it would beotherwise. The present method of securing this desired result issuperior to other means heretofore used in that the stampings areinexpensive, and may be made easily to conform to the contour of thecylinder head. Moreover, the stampings may be made in integral units ifso desired. Thus, in Fig. I there is illustrated a unitary bafiie ordeflecting member consisting of a plurality of baffle members 21 joinedto each other at 22. In some respects, a unitary element may be moredesirable than a structure embodying individual baiiling members. It isto be noted, however, that the individual bar es, one of which isillustrated in Fig. III, may be utilized with equally successful resultsinsofar as effectiveness of operation is concerned.

It is to be understood, of course, that the invention is not limited tothe precise baille illustrated, and that the principles underlying thesame may be extended to include other modifications which are likewiseaimed to modify the path of travel of the water entering the inletwhereby it is deflected downwardly into the lower extremity of the well.From a consideration of the invention as illustrated and hereinabovedescribed, it will be apparent that it affords a means of insuring anadequate circulation of water through the well of the cylinder headwithout requiring the adherence to a small margin of tolerance, and alsowithout necessitating the presence of packing material which issusceptible to deterioration and applied only with considerableinconvenience.

I claim:

1. In an internal combustion engine of the Knightclass, including acylinder casting, a plurality of cylinder heads each having a wellportion, a cover for the heads and casting, and means intermediate thecover and the casting for deflecting the water into the well.

2. In an internal combustion engine of the Knight class, a jacketedcylinder casting, a plurality of cylinder heads each having a wellportion, a cover for said heads and means intermediate the heads andcover for deflecting the water through the well.

3. In an internal combustion engine of the Knight class, a cylindercasting having a jacket for circulating water therethrough, and anopening for discharging the same, a plurality of cylinder heads securedto the casting, a cover cooperatively disposed with respect to the headsand cylinder casting and adapted to receive the water discharged fromsaid casting, bafHe means positioned intermediate the cover and castingto deflect the water flowing from the cylinder casting to the headwhereby it will be directed to the lower extremities of the head.

a. An article of manufacture: a water defiector for Knight enginescomprising a metallic member adapted to be secured between the head andcylinder of the engine and in engagement with the well, said memberbeing adapted to deflect the water entering the head about the lowerextremities of the well.

5. A Knight engine comprising a cylinder casting having a plurality ofcylinder chambers, reciprocative sleeves and pistons, a dependingcylinder head for each of said cylinder chambers mounted on saidcasting, a water jacket cover and a pressed metal deflector disposedbetween the cover and head, adapted to direct the water from thecylinder casting into the well of the head.

6. An internal combustion engine, of the sleeve valve type comprising incombination, a water jacketed cylinder, a piston operable therein, awater jacketed cylinder head forming a sleeve pocket with the cylinder,and a sheet metal cylinder head water jacket cover constructed andpositioned for co-operation with the cylinder head to direct the flow ofcooling water from the cylinder jacket generally downwardly into andacross the cylinder head.

7. An internal combustion engine of the sleeve valve type comprising incombination, a water jacketed cylinder, a piston operable therein, awater jacketed cylinder head form-- ing a sleeve pocket with thecylinder, a cylinder head water jacket cover eo-operating with thecylinder head water jacket to provide a conduit for the cooling water,and a cylinder head top cover forming a water header.

8. An internal combustion engine of the sleeve valve type comprising incombination, a water jacketed cylinder, a piston operable therein, awater acketed cylinder head forming a sleeve pocket with the cylinder, acylinder head water jacket cover, said cylinder head and cover providedwith co-operating battles for directing water from the cylinder jacketto flow generally downwardly into and across the cylinder head, and acylinder head top cover.

9. An internal combustion engine of the sleeve valve type comprising incombination, a water jacketed cylinder, a piston operable therein, awater jacketed cylinder head forming a sleeve pocket with the cylinder,a cylinder head water acket cover, and co-operatingbaifles on thecylinder head and jacket combination, a jacketed cylinder, a jacketedcylinder head closing the cylinder, a cylinder head cover, and meansseparate from the head and cover enclosed by the cover constructed andarranged to conduct a cooling medium from the cylinder jacket to thecylinder head acket.

12. A sleeve valve engine comprising in combination, a jacketedcylinder, a jacketed cylinder head closing the cylinder, a cylinder headcover, and an element separate from the head and cover enclosed by thecover constructed and arranged to conduct a cooling medium from thecylinder jacket to the cylinder head jacket.

13. A sleeve valve engine comprising in combination, a acketed cylinder,a jacketed cylinder head closing the cylinder, a cylin der headcover,and a sheet metal stamping separate from the head and cover enclosed bythe cover [constructed and arranged to conduct a cooling medium from thecylinder jacket to the cylinder head jacket.

14. A sleeve'valve engine comprising in combination, "a jacketedcylinder, a jacketed cylinder head closing the cylinder, a cylinder headcover, and an element separate from the head and cover enclosed by thecover constructed and arranged to conduct a cooling medium from thecylinder jacket to the cylinder head jacket, said element having aportion seated on the cylinder upper'end.

15. Asleeve valve engine comprising in combination, a jacketed cylinder,a jacketed cylinder head closing the cylinder, a cylinder head cover,and an element separate from the head and cover enclosed by the coverconstructed and arranged to conduct a cooling medium from thecylinderjacket to the cylinder head jacket, said element having a portion seatedonth-e cylinder upper end intermediate the cylinder head-and cover.

16. A sleeve valve engine comprising in combination, a jacketedcylinder, a jacketed cylinder head closing the cylinder, acylinder headcover, and an element separate from the head and cover enclosed by thecover constructed and arranged to conduct a cooling medium from thecylinder jacket to the cylinder head jacket, said element having aportion seated 'on the cylinder upper end,

said element having a portion cooperating with the cylinder head formaintaining the element in position. I

17. A sleeve valve engine comprising in combination, a acket-edcylinder, a acketed cylinder head closing the cylinder, a cylinder headco ver,;and an element separate from the head and cover enclosed by thecover con- .structed and arranged'to conduct a cooling medium from thecylinder jacket to the cylinder head jacket, said element provided witha downwardly flanged portion spaced to one side of the cylinder head.

18. A- sleeve valve engine comprising in,

combination, a jacketed cylinder having a cooling medium outlet in itsupper end, a cylinder head having a flanged portion seated on saidcylinder upper end to oneside of said cylinder outlet, a cover for thecylinder head having a portion seated on the other side of' saidcylinder outlet, and a coolingmedium deflecting and guiding elementenclosed by the cover and having a portion seated on said cylinder upperend adjacent said cylinder.

outlet.

'19. A sleeve valve engine comprising in combination, a jacketedcylinder, a j acketed cylinder head closing the cylinder, a cylinderhead cover, means separate from the,

head and cover enclosed by the cover constructed and arranged to conducta cooling medium from the cylinder jacket to the cylinder head jacket,and cooling medium deliecting means carried by the cylinder head.

and cooperating with the first said means. 20. In a sleeve valve engine,a jacketed cylinder, a cylinder head having a jacket depending in thecylinder, a cylinder head cover anda member beneath the cover -over-.

lying at least a portioir'of the cylinder head jacket, said membercommunicating with the cylinder jacket to receive water therefrom.

'21. An internalcombustion engine of the sleeve valve type comprising incombina-.

ing. the barrel for locating the member in position, said memberconstructed to form a Water deflecting passage in conjunction with thecylinder head acket for directing water from the cylinder jacket to flowgenerally downwardly into and across the cylinder head. i

22. A sleeve valve engine comprising a cylinder, a cylinder head, acover member, a member within the cover for guiding cooling water intothe cylinder head, said second member having a recessed portion engagingthe cylinder head.

23. A sleeve valve engine comprising a cylinder, a cylinder head member,a cover member, an element within the cover for guiding cooling waterinto the cylinder head, and positioning means for said elementco-operating with one of said members.

24;. In a sleeve valve engine, a acketed cylinder, a cylinder headhaving an annular jacket depending in the cylinder, a cylinder headcover, and a member beneath the cover overlying the annular cylinderhead acket, said member communicating with the cylinder jacket toreceive water therefrom.

25. In a sleeve valve engine, a jacketed cylinder, a cylinder headhaving a jacket depending in the cylinder, a cylinder head cover, and amember bridging the cylinder head acket and forming a water conduit withthe cylinder head acket.

26. In a sleeve valve engine, a cylinder, a cylinder head having aflanged portion seated on the cylinder and formed with a water jacketdepending in the cylinder, and a water deflecting battle over saiddepending water jacket extending upwardly and laterally to a positionoverlying the cylinder head flange.

27. An internal combustion engine of the sleeve valve type comprising incombination a water jacketed cylinder, a piston operable therein, awater jacketed cylinder head forming a sleeve pocket with the cylinderand provided with a barrel portion, a cylinder head cover through whichsaid barrel extends, a sealing ring between the barrel and cylinder headcover, and a member intermediate the cylinder head cover and cylinderhead having a recessed portion embracing the barrel for locating themember in position, said recess being open at an edge of said member,said member constructed to form a water deflecting passage inconjunction with the cylinder head acket for directing water from thecylinder jacket to flow generally downwardly into and across thecylinder head.

28. An internal combustion engine of the sleeve valve type comprising incombination a water acketed cylinder, a piston operable therein, a waterjacketed cylinder head forming a sleeve pocket with the cylinder andprovided with a barrel portion, a cylinder head cover through which saidbarrel e10 tends, a sealing ring between the barrel and cylinder headcover, and a member intermediate the cylinder head cover and cylinderhead having a recessed portion embracing the barrel for locating themember in position, said member constructed to form a water deflectingpassage in conjunction with the cylinder head jacket for directing waterfrom the cylinder jacket to flow generally downwardly into and acrossthe cylinder head, said member being removable independently of thesealing ring.

29. .An internal combustion engine of the sleeve valve type comprising acylinder, a cylinder head having a water acket portion depending intosaid cylinder and an upstanding barrel portion, a cylinder head cover, amember within the cover co-operating with the cylinder head to directcooling water into the cylinder head acket, said member having alocating portion only partially surrounding the barrel.

30. An internal combustion engine of the sleeve valve type comprising incombination, a water acketed cylinder, a piston operable therein, awater jacketed cylinder head forming a sleeve pocket with the cylinderand provided with a barrel portion, a cylinder head cover through whichsaid barrel extends, a sealing ring between the barrel and cylinder headcover, and a sheet metal member intermediate the cylinder head cover andcylinder head having a recessed portion opening at an edge of the memberand embracing the barrel for locating the member in position, saidmember constructed to form a water deflecting passage in conjunctionwith the cylinder head acket for directing water from the cylinderjacket to flow generally downwardly into and across the cylinder head.

31. A sleeve valve engine comprising a cylinder, a cylinder head, acover member, a member within the cover for guiding cooling water intothe cylinder head, said second member having a recessed portion open atan edge thereof, and engaging the cylinder head.

32. A sleeve valve engine comprising a cylinder, a cylinder head, acover member, a member within the cover for guiding cooling water intothe cylinder head, said second member having a substantiallysemicircular recessed portion engageable with the cylinder head.

33. A sleeve valve engine comprising a cylinder, a cylinder headprovided with a barrel a cover member, an element within the cover forguiding cooling water into the cylinder head, said element having arecessed portion only partially surrounding the cylinder head barrel.

34. An internal combustion engine of the sleeve valve type comprising acylinder, a cylinder head having a water jacket portion depending intosaid cylinder and an upstanding barrel portion, a cylinder head cover, amember within the cover co-operating with the cylinder head to directcooling water into the cylinder head jacket, sealing means between thebarrel and cylinder head cover, said member having a portion engageablewith the barrel, said member being removable with respect to thecylinder head and cylinder independently of the sealing rin 35. Aninternal combustion engine of the sleeve valve type comprising acylinder, a cylinder head having a water acket portion depending intosaid cylinder and an upstanding barrel portion, a cylinder'head cover, a

member within the cover co-operating with 36. A sleeve valve enginecomprising a cylinder, a cylinder head, a cover member, a member withinthe cover for guiding cooling water into the cylinder head, a sealingjolnt between the cylinder head and cover member, said second memberhaving a cylinder head engaging portion independent of the sealingjoint.

In testimony whereof, I aflix my signature.

WALTER S. FISHER.

